Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...

The periodic table, also called the periodic table of elements, is an organized arrangement of the 118 known chemical elements. The chemical elements are arranged from left to right and top to bottom ...

Nineteen elements on the periodic table — including gold, cadmium, arsenic and aluminum — are getting their atomic weights adjusted. The International Union of Pure and Applied Chemistry (IUPAC) ...

Thank you for bringing to my attention the recent International Union of Pure & Applied Chemistry report “Atomic weights of the elements 2009” (C&EN, Dec. 20 ...

Keepers of precise periodic tables, it’s time to make some changes. The International Union of Pure and Applied Chemistry Commission on Isotopic Abundances and Atomic Weights (IUPAC CIAAW) has issued ...

LOS ANGELES -- Call it Extreme Makeover: Chemistry Edition. That imposing, yellowing chart gracing the walls of every science classroom is about to get an update. The adjustments planned for the ...

Professor Theodore W. Richards '86 and Mr. Max E. Lambert, who came to America from the Grand Ducal Technical school of Karlsruhe for the purpose of assisting Professor Richards, have recently been ...

More than a thousand different versions of the periodic table have been created since Dmitri Mendeleev drew the first 150 years ago – but why is one version more familiar to us than practically every ...

DISCUSSING the unit of atomic weight before Section A (Physics) at the meeting of the British Association in London on Sept. 28, Dr. F. W. Aston contrasted the point of view of the physicist and the ...

“LA république n’a pas besoin de savants ni de chimistes.” With that curt dismissal a court in revolutionary France cut short the life of Antoine-Laurent de Lavoisier, argued by some to be the ...

Stars and galaxies may have formed much sooner after the big bang than astronomers previously thought, according to new observations by a German–US collaboration. The team detected iron in three of ...

https://stock.adobe.com/ca/images/3d-illustration-of-yttrium-as-an-element-of-the-periodic-table-yttrium-element-a-metallic-background-yttrium-chemical-element-design ...